version 1.18, 2020/05/21 21:45:57
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version 1.19, 2023/08/07 08:38:52
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date December 2016 |
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* |
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*> \ingroup doubleOTHERcomputational |
*> \ingroup doubleOTHERcomputational |
* |
* |
*> \par Contributors: |
*> \par Contributors: |
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SUBROUTINE DHSEQR( JOB, COMPZ, N, ILO, IHI, H, LDH, WR, WI, Z, |
SUBROUTINE DHSEQR( JOB, COMPZ, N, ILO, IHI, H, LDH, WR, WI, Z, |
$ LDZ, WORK, LWORK, INFO ) |
$ LDZ, WORK, LWORK, INFO ) |
* |
* |
* -- LAPACK computational routine (version 3.7.0) -- |
* -- LAPACK computational routine -- |
* -- LAPACK is a software package provided by Univ. of Tennessee, -- |
* -- LAPACK is a software package provided by Univ. of Tennessee, -- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* December 2016 |
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* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER IHI, ILO, INFO, LDH, LDZ, LWORK, N |
INTEGER IHI, ILO, INFO, LDH, LDZ, LWORK, N |
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* . DLAHQR because of insufficient subdiagonal scratch space. |
* . DLAHQR because of insufficient subdiagonal scratch space. |
* . (This is a hard limit.) ==== |
* . (This is a hard limit.) ==== |
INTEGER NTINY |
INTEGER NTINY |
PARAMETER ( NTINY = 11 ) |
PARAMETER ( NTINY = 15 ) |
* |
* |
* ==== NL allocates some local workspace to help small matrices |
* ==== NL allocates some local workspace to help small matrices |
* . through a rare DLAHQR failure. NL > NTINY = 11 is |
* . through a rare DLAHQR failure. NL > NTINY = 15 is |
* . required and NL <= NMIN = ILAENV(ISPEC=12,...) is recom- |
* . required and NL <= NMIN = ILAENV(ISPEC=12,...) is recom- |
* . mended. (The default value of NMIN is 75.) Using NL = 49 |
* . mended. (The default value of NMIN is 75.) Using NL = 49 |
* . allows up to six simultaneous shifts and a 16-by-16 |
* . allows up to six simultaneous shifts and a 16-by-16 |